slipin' belt

BUICKNAILHEAD had a post about this but i couldn't find it...so my belt is slipin'{not charging battery} and i have replaced it with a dayco it was fine for a week and now it started to slip again??any ideas or advice.is there a better brand,should i clean my pulleys real good??should i think about setting the car on fire???thanks y'all....craig

 

New belts will stretch a little after initial installation, and will often require a re-tightening within a week or so.

Some engine accessory layouts create a problem with the contact area on the pulley...Olds V8s of the late 70s and early 80s are known for this...the belt actually only contacts a small percentage of the total cir***frence of the alternator pulley, making it prone to slippage that you might not always hear.

As always, tension adjustment is critical. Too loose and it will slip...too tight and it will stretch pre-maturely and place undue strees on belt-driven accessories. With a standard v-belt, you want about 3/4" of deflection between the two pulleys furthest apart. Up to one inch is fine, but any more is too loose, and less will be too tight.

It goes without saying to be sure that your pulleys are in proper alignment, and that the grooves are clean and free from warpage or bends, too.

 

You may have initially had the incorrect belt width. A new belt the same size will, in time, do the same. Try a size wider (Not longer) belt and watch it closely.

 

Is the replacement belt a 10A or a 12A?

 

One thing that sometimes get overlooked is pulley wear. If it is a high milage engine pulleys can get worn till the belt is in the bottom of the groove. V belts grip on the sides so if the belt is contacting the bottom it wont hold. Have seen this overlooked before, engine rebuilt but the pulleys were original and worn out.

 

K now craig....setting the car on fire would just be silly... Check your pulleys for alignment. And lets get you into a GoodYear Gator for that puppy. make sure we get a new bolt for your bracket as well... Another thing is try not to do burnouts right away heehehe (jk) Lets check er out this week end if you like..